Dust-guard.



' F. B. HARR'ISON.

DUST GUARD.

I APPLICATI L 21.1915- 1 1 7 l ,045 Patented Feb. 8, 1916.

FRANK B. HARRISON, OF TOLEDO, OHIO.

DUST-GUARD.

Specification of Letters Patent.

Patented Feb. 8, 1916.

Application filed May 21, 1915. Serial No. 29,469.

To all whom it may concern:

Be it known that I, FRANK B. HARRISON,

a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented certain new and useful Improvements in Dust-Guards; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being ,had to the accompanying drawings, and to the letters'and figures of reference marked thereon, which form a part of this specification.

In the operation of railway cars, it is important to protect the journals and journal boxes against abrasion and undue wear by reason'of the access of dust, sand and other foreign matter to the interior of the journal boxes. It is also important to prevent the escapeand waste of oil from the journal boxes. The usual method of guarding against these difliculties is to provide the journal-box with adust-guard arranged to exclude the dust and prevent the escape of lubricant.

. My invention relates to a device of this character and is designed to provide a dustguard which shall be simple, cheap and durable, and which will remain in its proper position and operative relation within the dust-guard'chamber of the journal-box regardless of the wear of the journal-brass or the ordinary vicissitudes of railway service.

My invention is designed as an improvement upon the dust-guard patented to me by U. S. Letters Patent Number 752,164, dated February 16, 1904, and, more particularly, to furnish an elastic, channeled steel ring of peculiar construction which shall tightly clasp the car-axle and which shall not leave an opening at the meeting opposed ends of the ring and which shall furnish a dust-proof joint when the ring is in service position upon its axle.

To these ends my invention consists of the 1 devices, construction and arrangement of parts hereinafter described, and shown and illustrated in the accompanying drawings, in which Figure 1 is a perspective view of my de vice; Fig. 2, an edge-view of one of the blocks of my device showing the channeled spring ring hereinafter referred to, in central transverse section, and Fig. 3, a perspective view of the ring hereinafter re ferred to, detached.

It should be understood that the device of the present invention is intended for use in connectlon with the jOHI'IltLlgbOX such as is m common use in connection with car-trucks, thls journal box being provided with the usual chamber formed in the back portion of the box for the reception of the dustguard. Since this journal-box and its dustguard recess are well understood and as they constitute no part of the present invention they need not be here further illustrated or described.

In the drawings 1 and 2 represent the two equal parts of a dust-guard block or frame which may be regarded as a substantially square fiat piece of board or other suitable material having centrally therethrough a circular hole 3 of slightly greater diameter than the car axle to be embraced and being transversely divided in halves. Each margin of the opening 3 is slightly and equally countersunk, as at 4, thus forming an inwardly projecting circumferential tongue or rib 5. The meeting edges of the parts l2 are provided with dowels, as indicated in dotted lines in Fig. 1, by which the bloc parts are removably, held together.

6 is a steel sheefmetal ring, U-shaped in cross-section and open at one side. The channel of the ring receives the tongue 5 with a fit sufliciently loose to permit the rotation of the ring which,v when in service position, tightly clasps and revolves with its axle. The bottom of the channel of one of the meeting ends of a ring is, for a short distance, cut away, as at 7, leaving two forwardly projecting flaps 8 which are bentoutwardly slightly so as to receive between them and to overlap the sides of the opposite end of the ring. The breadth of the tongue 5 and the thickness of the metal flanges of the ring aresuch that when the.

parts are assembled the outer surfaces of the flaps 8 lie only slightly within the planes of the surfaces of the parts 1--2.-

Itv-will be seen that when the parts here described are ,assembled in operative relation to their journal, the contractile stress of the ring will prevent access of dust between the ring and its flaps and the axle, and between the overlapping contacting flaps 8 and the opposed ring-flanges, as well as betweenthe contacting sides of the tongue and the ring-flanges.

Having described my invention, what I claim and desire to secure by Letters Patent of the United States, is

1. A dust-guard comprising a two part frame having centrally therethrougha circular opening bounded by an inwardly projecting circumferential tongue, an open circumferentially channeled spring ring the channel of which takes and frictionally engages said tongue, the bottom of one end of said channel being cut away, the sides of the ring forming flaps which overlap and frictionally engage the sides of the opposed end of the ring.

2. In a device of the described character, an open spring ring, U-shaped in crosssection, one end of said spring having for- Wardly projecting flaps which overlap and frictionally engage the sides of the opposite end of the ring the bottom of the channel between said flaps being removed.

In testimony whereof I aflix my signature in presence of two witnesses.

- FRANK B. HARRISON.

Witnesses:

CHAS. W. BOND, GERTRUDE BBACKER. 

